/*
 * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.activiti.engine.impl.interceptor;

import org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl;
import org.activiti.engine.impl.context.Context;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**


 */
public class CommandContextInterceptor extends AbstractCommandInterceptor {

    private static final Logger log = LoggerFactory.getLogger(CommandContextInterceptor.class);

    protected CommandContextFactory commandContextFactory;
    protected ProcessEngineConfigurationImpl processEngineConfiguration;

    public CommandContextInterceptor() {}

    public CommandContextInterceptor(
        CommandContextFactory commandContextFactory,
        ProcessEngineConfigurationImpl processEngineConfiguration
    ) {
        this.commandContextFactory = commandContextFactory;
        this.processEngineConfiguration = processEngineConfiguration;
    }

    public <T> T execute(CommandConfig config, Command<T> command) {
        CommandContext context = Context.getCommandContext();

        boolean contextReused = false;
        // We need to check the exception, because the transaction can be in a
        // rollback state, and some other command is being fired to compensate (eg. decrementing job retries)
        if (!config.isContextReusePossible() || context == null || context.getException() != null) {
            context = commandContextFactory.createCommandContext(command);
        } else {
            log.debug(
                "Valid context found. Reusing it for the current command '{}'",
                command.getClass().getCanonicalName()
            );
            contextReused = true;
            context.setReused(true);
        }

        try {
            // Push on stack
            Context.setCommandContext(context);
            Context.setProcessEngineConfiguration(processEngineConfiguration);
            return next.execute(config, command);
        } catch (Throwable e) {
            context.exception(e);
        } finally {
            try {
                if (!contextReused) {
                    context.close();
                }
            } finally {
                // Pop from stack
                Context.removeCommandContext();
                Context.removeProcessEngineConfiguration();
                Context.removeBpmnOverrideContext();
            }
        }

        return null;
    }

    public CommandContextFactory getCommandContextFactory() {
        return commandContextFactory;
    }

    public void setCommandContextFactory(CommandContextFactory commandContextFactory) {
        this.commandContextFactory = commandContextFactory;
    }

    public ProcessEngineConfigurationImpl getProcessEngineConfiguration() {
        return processEngineConfiguration;
    }

    public void setProcessEngineContext(ProcessEngineConfigurationImpl processEngineContext) {
        this.processEngineConfiguration = processEngineContext;
    }
}
